AD8667ARZ-REEL

Overview

The AD8667ARZ-REEL is a dual precision CMOS operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail output capability and utilizes patented DigiTrim® trimming technology to achieve low offset voltage, specified as a maximum of 175 µV at VSY = 5 V and 300 µV at VSY = 16 V. The device operates on supply voltages ranging from 5 V to 16 V (or ±2.5 V to ±8 V) with a typical supply current of 275 µA per amplifier. Key electrical characteristics include a gain bandwidth product of 540 kHz, a slew rate of 0.3 V/µs, and an input bias current of 300 fA. Noise performance is characterized by a voltage noise density of 23 nV/√Hz at 1 kHz. The component is housed in an 8-lead narrow SOIC package and is rated for operation within the extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes patented DigiTrim® circuit trimming technology to ensure low input offset voltage across the operating temperature range.
• Features rail-to-rail output swing capability to maximize dynamic range when driving low-frequency data converters.
• Provides very low input bias current combined with low current noise, suitable for high-impedance sensor applications.
• Operates stably with unity-gain configurations while maintaining low power consumption under single or dual supply conditions.

Applications

• Sensor front ends
• Transimpedance amplifiers
• Photodiode amplification
• Low power ADC drivers
• Medical diagnostic instruments

Procurement Notes

Verify that the ordering suffix matches the required packaging format, as the datasheet lists both tape-and-reel options (e.g., -REEL, -REEL7) and tube formats. Confirm the package type corresponds to the specific variant ordered, such as the 8-Lead SOIC_N for the ARZ series versus MSOP variants. Ensure compliance requirements align with the Z suffix indicating RoHS compliance. Cross-reference the manufacturer part number against distributor listings to confirm availability and exact revision status before finalizing procurement.

Selection Notes

Select this component when a dual-channel configuration is required alongside low power consumption and precision DC accuracy. The wide supply voltage range up to 16 V makes it suitable for systems requiring higher headroom than standard 5 V op amps. Consider the rail-to-rail output feature if interfacing directly with single-supply data converters. Evaluate the 300 fA input bias current against system leakage requirements for high-impedance sources. Verify that the 8-lead SOIC package dimensions fit the available PCB real estate compared to smaller alternatives like MSOP.

Part Context

The AD8667ARZ-REEL belongs to the AD866x family of low noise, precision, 16 V CMOS rail-to-rail operational amplifiers. This family includes the single-channel AD8663 and the quad-channel AD8669, all sharing similar electrical specifications and DigiTrim® technology. The AD8667 specifically provides two independent amplifiers in one package, offering channel separation benefits for differential signal processing. The REEL suffix indicates the component is supplied in a tape-and-reel format designed for automated surface-mount assembly processes.

Replacement Considerations

The AD8667ARMZ serves as a direct functional replacement within the same family, differing only in the package style (MSOP instead of SOIC). Other members of the AD866x series, such as the AD8663 or AD8669, share identical electrical characteristics but differ in channel count. When substituting, verify pinout compatibility and physical footprint constraints associated with the package change.